Getting started: ● Go to learn-biology.com, then AP Bio v2.0, then Unit 5 ● Start with “Topics 5.3-5.5, Part 1: Mendelian Genetics and Punnett Squares” ● If you’re submitting this electronically to your instructor, please type your answers in blue, red, or any other color your instructor suggests. ● As you go, click on this ❑ to change it to ☑ 1. Topics 5.3 - 5.5 Part 1: Mendelian Genetics and Punnett Squares 1. Complete the interactive reading, “Introducing Genetics.” 2. Complete the “Genetics Vocabulary Check” Checking Understanding: Use the diagram below to explain the symptoms and inheritance of sickle cell anemia. In your explanation, use the terms homozygote, heterozygote, gene, allele, dominant, and recessive Sickle cell anemia symptoms are sickle cells break and die easily and extreme pain. A heterozygote creates gametes that have a 1:2 chance that they'll pass on their recessive allele. Both the mom and dad are heterozygotes and carry the recessive HBS allele but don't have it. Homozygotes have both the recessive gene which makes them have sickle cell anemia even though they have the HBS allele. 3. Read the introduction and interactive reading “Understanding Cystic Fibrosis.” 4. Follow the link to the Genetics Home Reference page about Cystic fibrosis (which will open in a new tab). Set a timer to five minutes, and spend that time reading the 1 st three sections (description, frequency, and genetic changes). Fill the space below with a brief description of the biology and inheritance of cystic fibrosis. . Cystic fibrosis is an inherited disease characterized by the buildup of thick, sticky mucus that can damage many of the body's organs. In people with cystic fibrosis, the body produces mucus that is abnormally thick and sticky. This abnormal mucus can clog the airways, leading to severe problems with breathing and bacterial infections in the lungs. These infections cause chronic coughing, wheezing, and inflammation. Over time, mucus buildup and infections result in permanent lung damage, including the formation of scar tissue (fibrosis) and cysts in the lungs. 5. Complete the reading about Punnett squares. Complete the three guided Punnett squares. Checking Understanding: Mendel found that in Pea plants, purple flower color (P) is dominant to white (p). Cross a white pea with a heterozygote. Complete all six steps, and show your work below. If a purple heterozygous pea plant is crossed with a white plant, 50% of their offspring will be a purple heterozygous plant and 50% would be a white homozygous plant. Pp, pp > Pp, Pp, pp, pp
